2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2259

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2259

Circuit/System Description

The automatic transmission (AT) input and output speed sensor (ISS and OSS) assembly each are part of a single harness. The ISS is a hall-effect

type sensor. The ISS/OSS mounts to the control valve upper body assembly. The ISS sensor end faces the splines on the 1-2-3-4 and 3-5-R clutch

housing outside diameter surface. The sensor receives 8.3-9.3 volts on the ISS/OSS supply voltage circuit from the control solenoid valve

assembly. As the 1-2-3-4 and 3-5-R clutch housing rotates, the sensor produces a signal frequency based on the splines on the clutch housing

outside diameter surface. This signal is transmitted through the ISS signal circuit to the control solenoid valve assembly. The control solenoid valve

assembly uses the ISS signal to determine line pressure, transmission shift patterns, torque converter clutch (TCC) slip speed and gear ratio.

Conditions for Running the DTC

P0716

* DTCs P0101, P0102, P0103, P0121, P0122, P0123, P0716, P0717, P0722, P0723, P0723, P0752, P0973, or P0974 are not set.

* The engine speed is 500 RPM or greater for 5 seconds.

* Engine torque is between 0-1492 Nm (0-1100 lb ft).

* Ignition voltage is 8.6 volts or greater.

* The vehicle speed is greater than 0 km/h (0 mph).

* The throttle position must be greater than 0 percent.

P0717

* DTCs P0101, P0102, P0103, P0716, P0717, P0722, or P0723 are not set.

* The engine speed is 500 RPM or greater for 5 seconds.

* Ignition voltage is 8.6 volts or greater.

* The TCM must receive a valid torque signal from the ECM.

* The vehicle speed is greater than 16 km/h (10 mph).

* The engine torque is greater than 50 Nm (37 lb ft).

Conditions for Setting the DTC

P0716

The transmission input speed sensor RPM drop is greater than 882 RPM for 1 second.

P0717

Transmission input shaft speed is less than 35 RPM for 4 seconds.

Action Taken When the DTC Sets

P0716

* DTC P0716 is a Type A DTC.

* The TCM freezes transmission adaptive functions.

* The TCM turns OFF all solenoids.

* The TCM inhibits Tap Up/Down functions.

* The transmission defaults to second gear.

* The TCM enables torque management.

* The TCM inhibits manual shifting of forward gears.

P0717

* DTC P0717 is a Type A DTC.

* The high side driver is turned OFF.

* The TCM turns OFF all solenoids.

* The TCM freezes transmission adaptive functions.

* The TCM inhibits Tap Up/Down functions.

* The TCM inhibits manual shifting of forward gears.

Conditions for Clearing the DTC

P0716 and P0717 are Type A DTCs.